Instant is
off
Search plugin
Manual
haskell.org
mapWriterT
Packages
transformers
mtl
mapWriterT
:: (m (a, w) -> n (b, w')) -> WriterT w m a -> WriterT w' n b
transformers
Control.Monad.Trans.Writer.Lazy
,
transformers
Control.Monad.Trans.Writer.Strict
,
mtl
Control.Monad.Writer.Lazy
,
mtl
Control.Monad.Writer.Strict
Map both the return value and output of a computation using the given function. * (
mapWriterT
f m) = f > (
runWriterT